Ports is the name of the game, all the HYDROS Controls just have a different array of ports to do different things.
I don't think there is any secret about how I feel about the website and lack of cohesive and easy to decipher information or product names.
I can honestly see why the OP basically said -- "Well what does it really do and what parts do I need?".
So given the context and your burning (ringing) ears, I figure I may put a worm in one (
@Lasse -- did I do that right?)
I think you would be well served by creating an easy to find and read -- comprehensive ports and features matrix with all products listed -- If it exists since last I check, I will stand corrected.
You may know, or maybe not -- When I decided to retire my own modular DIY controller system (no desire to tinker anymore). I looked at your website with great enthusiasm about something new and not Neptune.
I just couldn't make heads or tails of anything and just figuring out basic features and specifications felt like I fell down Alice's rabbit hole -- exactly the opposite of I was looking for, given where I came from. So after a few hours of looking and googling and head scratching -- I moved on and spent $6K with GHL, mostly because I didn't want anything to do with Neptune and the GHL information was easy to digest.
Just offering my personal experience and perspective. Maybe I am on an island and maybe my expectations are unreasonable, but that is my two cents as a once perspective customer still hoping the best for the Maven is something that will work for me.